Default Resize ext2 partition??

So, I have a samsung galaxy young s6312, stock android 4.1.2 jellybean, rooted. Since the internal memory is very low, I use link2sd to link app files to my external sd card. Now I have created an ext2 partition of 1.5 gb to use with link2sd. but now the partition is full, and my internal memory is also full, because I have installed about 3gb of apps in my phone, half are in the second partition, and half are on my internal memory. so now I want to know if there is a way I can increase the size of my second partition. if I had enough memory, I would have moved the apps to my internal memory temporarily, but I don't have enough internal memory to move the linked apps to my internal memory. so is there any way to increase size of second partition without formatting it?? NOTE: I don't have any problem in formatting the first partition if necessary, but I can't format the second partition. NOTE: the sd card I use is of 8 gb...
Thanks...........